EP2720092A1 - System for connecting a bracelet to a watch case - Google Patents

System for connecting a bracelet to a watch case Download PDF

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Publication number
EP2720092A1
EP2720092A1 EP20120188013 EP12188013A EP2720092A1 EP 2720092 A1 EP2720092 A1 EP 2720092A1 EP 20120188013 EP20120188013 EP 20120188013 EP 12188013 A EP12188013 A EP 12188013A EP 2720092 A1 EP2720092 A1 EP 2720092A1
Authority
EP
European Patent Office
Prior art keywords
bracelet
watch case
hollow
link
hollow element
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP20120188013
Other languages
German (de)
French (fr)
Other versions
EP2720092B1 (en
Inventor
Philipp Tschumi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Swatch Group Management Services AG
Original Assignee
Swatch Group Management Services AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Swatch Group Management Services AG filed Critical Swatch Group Management Services AG
Priority to EP20120188013 priority Critical patent/EP2720092B1/en
Priority to US13/942,984 priority patent/US9010593B2/en
Priority to JP2013170979A priority patent/JP5690382B2/en
Priority to CN201310466784.2A priority patent/CN103720140B/en
Publication of EP2720092A1 publication Critical patent/EP2720092A1/en
Priority to HK14110237.6A priority patent/HK1196756A1/en
Application granted granted Critical
Publication of EP2720092B1 publication Critical patent/EP2720092B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/14—Suspending devices, supports or stands for time-pieces insofar as they form part of the case
    • G04B37/1486—Arrangements for fixing to a bracelet
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/14—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps characterised by the way of fastening to a wrist-watch or the like
    • A—HUMAN NECESSITIES
    • A44—HABERDASHERY; JEWELLERY
    • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
    • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
    • A44C5/14—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps characterised by the way of fastening to a wrist-watch or the like
    • A44C5/147—Watchcase itself used as fastener
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B37/00—Cases
    • G04B37/14—Suspending devices, supports or stands for time-pieces insofar as they form part of the case
    • G04B37/16—Fastening the case to the bracelet
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/47—Strap-end-attaching devices
    • Y10T24/4718—Watch pintle connected
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/47—Strap-end-attaching devices
    • Y10T24/4782—Watch strap

Definitions

  • the present invention relates to a system for connecting a bracelet to a watch case comprising dressing elements made of a hard material such as a ceramic. More specifically, the present invention relates to a link provided for connecting a bracelet to a case of a watch, this link comprising a first hollow element and a second element embedded in the first element, the first hollow element carrying first fastening means to housing and the second member carrying second means for attachment to an adjacent link of the bracelet.
  • the invention relates to the field of wristwatches made of a hard material such as ceramics and intended to be assembled on watches whose housing comprises a covering made of hard material.
  • the cladding parts of hard materials are obtained by processes comprising a molding step followed by a sintering step. During the sintering operation, these parts are subject to a shrinkage phenomenon, that is to say they undergo a significant reduction in their volume under the combined actions of heat and pressure. . This shrinkage phenomenon can represent more than 30% of the initial volume of the pieces.
  • the processes currently used currently make it possible to manufacture such parts with tolerances on the dimensions which are of the order of 0.5 to 1%, the sintering step making it difficult to obtain lower tolerances. It can be noted that these tolerances fluctuate according to the batches of raw material used.
  • the manufacturing tolerances brought into play by the sintering operations may result in an uncertainty of the order of 0.2 mm over the length of a 3 cm ceramic watch case. Since ceramic watches are in the high-end range of watchmaking, such uncertainties are difficult for manufacturers to accept.
  • the most commonly adopted solution to make up the gaps between the various ceramic elements used to make the watches is to carry out a manual machining after the sintering step.
  • the manual machining steps have become more and more laborious in view of the number of parts to be processed.
  • the manual machining steps are made all the more difficult as the complexity of the geometry of the watch boxes constantly grows.
  • the present invention aims to overcome the disadvantages mentioned above as well as others by providing timepieces with improved aesthetics.
  • the present invention relates to a system for connecting a bracelet to a watch case by means of a link, the watch case having a middle part and a bottom, the link comprising a first hollow member and a second member partly embedded in the first hollow member, the first hollow member having first means for attachment to the watch case and the second member having second means for attachment to an adjacent link of the bracelet, characterized in that the watch case comprises a mechanical device arranged to rotate the second element about an axis transverse to the longitudinal direction of the bracelet, the second element imparting its pivoting movement to the first element which pivots in turn and which is pressed against the middle part of the watch case.
  • the present invention provides a system for connecting a bracelet to a watch case by means of a link which makes it possible to adjust the position of the bracelet with respect to the watch case. It is thus possible to overcome the problems inherent in manufacturing tolerances and to obtain an uninterrupted junction between the bracelet and the watch case without having to manually resume the trim parts, which is advantageous from the aesthetic point of view and economic.
  • the present invention proceeds from the general inventive idea of providing a system for connecting a bracelet to a housing of shows by means of a link, this system comprising means that allow the link to be pressed against the watch case.
  • FIG. 1 a wristwatch according to the prior art designated as a whole by the general reference numeral 1.
  • This wristwatch 1 comprises a bracelet 2 ceramic connected to a watch case 4 also made of ceramic.
  • games, noted d1 and d2 are apparent at the junction between the watch case 4 and the first links 6 of the bracelet 2.
  • these sets d1 and d2 come from manufacturing tolerances of the watch case 4 and the links 6 of the bracelet 2.
  • the manufacturing tolerances induce dimensional variations of the different elements of dressing, which causes the appearance of discontinuities at the junction between the bracelet 2 and the watch case 4. These discontinuities are unsightly, if only because they reveal the fastening means 8 bracelet 2 on the watch case 4.
  • the present invention solves this problem by providing a link having a particular structure to establish the mechanical connection without play between the bracelet and the watch case.
  • the figure 2 is a sectional view along the median axis of the bracelet of the terminal link that connects the bracelet to the watch case and the figure 3 is a perspective and exploded view of the mechanical device that brings closer to the watch case the link provided to connect the bracelet to the watch case.
  • the link according to the invention comprises a first hollow element 12 and a second element 14 partially embedded in the first hollow element 12.
  • This link 10 is intended to connect a bracelet, the first of which link 16 is shown in the drawing to a cladding element which at least partially defines a watch case 18.
  • the watch case 18 comprises a caseband 20 extended in the longitudinal direction of the wristband by horns 22 pierced with a hole 24.
  • the watch case 18 is classically bounded downwards by a bottom 26.
  • the first hollow element 12 carries first fastening means to the watch case and the second element 14 carries second attachment means 28 to the adjacent link 16 of the bracelet.
  • the second element 14 is in the form of a first and a second plate, respectively 30 and 32, of generally rectangular shapes and arranged in the extension of one another, the dimensions of the first wafer 30 located on the side of the watch case 18 being slightly smaller than the dimensions of the second wafer 32 located on the side of the bracelet.
  • the first and second plates 30 and 32 are interconnected by a common edge in the form of a hollow cylindrical portion 34 allowing the passage of an attachment pin 36 whose role will be described below.
  • the second wafer 32 further comprises along its free edge opposite the common edge by which it is connected to the first wafer 30 second means of attachment to the adjacent link 16 of the current type such as hinges 38 used in combination with a bar (not shown) of current type also.
  • the first plate 30 comprises substantially in the middle of its free edge opposite the hollow cylindrical portion 34 a notch 40 for the passage of a mechanical device such as a threaded rod of a set screw 42. This screw 42 is screwed into a threaded hole 44 which passes right through the bottom 26 of the watch case 18.
  • the first hollow element 12 forms a substantially trapezoidal cross-section envelope delimited by a front face 46, a rear face 48 and two lateral faces 50.
  • a housing 52 is arranged in the first hollow element 12. This housing 52 passes through the first hollow element 12 from one side to the other and opens at the front of the side of the end face 46 and at the rear of the side of the rear face 48 of the first hollow element. 12.
  • the housing 52 is dimensioned so that the first and second plates 30, 32 protrude from the first hollow element 12.
  • first fastening means of the first hollow element 12 to the watch case 18 comprise a bore 54 which opens in the housing 52 and which is formed in the lateral faces 50 of the first hollow element 12, transversely to the longitudinal direction of the bracelet.
  • This bore 54 is provided to receive the fixing pin 36.
  • the profile of the front face 46 of the first hollow element 12 matches the outline of the middle part of the watch case 18.
  • the link 10 on the watch case 18 it is first of all screwed slightly the adjusting screw 42 in the threaded hole 44 drilled in the bottom 26 of the watch case 18.
  • the second element 14 is inserted into the first hollow element 12 so that the first and the second plates 30, 32 project from the first hollow member 12.
  • the first hollow element 12 is slipped between the horns 22 of the watch case 18, taking care that the screw 42 engages in the notch 40 of the second element 14.
  • the holes 24 made in the horns 22, the bore 54 machined in the first hollow member 12 and the hollow cylindrical portion 34 are all aligned.
  • the attachment pin 36 has, at one of its ends, an increase in diameter 56 and at its other end a tapped hole for screwing a screw 58 which allows to block the fixing pin 36.
  • the adjustment screw 42 is accessed via the threaded hole 44 which opens into the bottom 26 of the watch case 18.
  • the adjusting screw 42 is screwed so that it is translated from top to bottom according to the arrow A in the tapped hole 44.
  • the adjusting screw 42 is pressed on the first plate 30 of the second element 14 so as to pivot the second element 14 in the opposite direction of the clockwise according to the arrow B.
  • the second element 14, embedded in the first hollow element 12 exerts on this first hollow element 12 a lever arm under the effect of which the first hollow element 12 approaches the watch case 18.

Abstract

The system has a bracelet link comprising a first hollow element (12) and a second element (14) partly nesting in the first hollow element. The first hollow element carries a first fastening unit to a watch case (18), and the second element carries a second fastening unit to an adjacent bracelet link (16). The watch case includes a mechanical device to pivot the second element about a transverse axis to longitudinal direction of a bracelet. The second element transmits pivoting motion to the first element, which pivots in turn and pressed against a case band (20) of the watch case. The mechanical device is a threaded stem. The first and second elements are rectangular shaped plates (30, 32). The fastening unit is a hinge pin (38).

Description

La présente invention concerne un système pour relier un bracelet à un boîtier de montre comportant des éléments d'habillage réalisés en un matériau dur tel qu'une céramique. Plus précisément, la présente invention concerne un maillon prévu pour relier un bracelet à un boîtier d'une montre, ce maillon comprenant un premier élément creux et un second élément imbriqué dans le premier élément, le premier élément creux portant des premiers moyens de fixation au boîtier et le second élément portant des seconds moyens de fixation à un maillon adjacent du bracelet.The present invention relates to a system for connecting a bracelet to a watch case comprising dressing elements made of a hard material such as a ceramic. More specifically, the present invention relates to a link provided for connecting a bracelet to a case of a watch, this link comprising a first hollow element and a second element embedded in the first element, the first hollow element carrying first fastening means to housing and the second member carrying second means for attachment to an adjacent link of the bracelet.

Très généralement, l'invention concerne le domaine des bracelets de montre réalisés en un matériau dur tel que la céramique et destinés à être assemblés sur des montres dont le boîtier comporte un habillage en matériau dur.Very generally, the invention relates to the field of wristwatches made of a hard material such as ceramics and intended to be assembled on watches whose housing comprises a covering made of hard material.

De telles structures présentent certaines limites dans leurs applications en raison même de leurs techniques de fabrication. En effet, les pièces d'habillage en matériaux durs, par exemple en céramique, sont obtenues par des procédés comportant une étape de moulage suivie d'une étape de frittage. Au cours de l'opération de frittage, ces pièces sont l'objet d'un phénomène de retrait, c'est-à-dire qu'elles subissent une réduction importante de leur volume sous les actions combinées de la chaleur et de la pression. Ce phénomène de retrait peut représenter plus de 30% du volume initial des pièces. Les procédés couramment mis en oeuvre permettent actuellement de fabriquer de telles pièces avec des tolérances sur les dimensions qui sont de l'ordre de 0.5 à 1%, l'étape de frittage rendant difficile l'obtention de tolérances plus faibles. On peut noter que ces tolérances fluctuent en fonction des lots de matière première utilisés.Such structures have certain limitations in their applications because of their manufacturing techniques. Indeed, the cladding parts of hard materials, for example ceramic, are obtained by processes comprising a molding step followed by a sintering step. During the sintering operation, these parts are subject to a shrinkage phenomenon, that is to say they undergo a significant reduction in their volume under the combined actions of heat and pressure. . This shrinkage phenomenon can represent more than 30% of the initial volume of the pieces. The processes currently used currently make it possible to manufacture such parts with tolerances on the dimensions which are of the order of 0.5 to 1%, the sintering step making it difficult to obtain lower tolerances. It can be noted that these tolerances fluctuate according to the batches of raw material used.

A titre d'exemple, les tolérances de fabrication mises en jeu par les opérations de frittage peuvent se traduire par une incertitude de l'ordre de 0.2 mm sur la longueur d'une boîte de montre en céramique de 3 centimètres. Etant donné que les montres en céramique se situent dans le domaine haut de gamme de la production horlogère, de telles incertitudes sont difficilement acceptables par les fabricants.By way of example, the manufacturing tolerances brought into play by the sintering operations may result in an uncertainty of the order of 0.2 mm over the length of a 3 cm ceramic watch case. Since ceramic watches are in the high-end range of watchmaking, such uncertainties are difficult for manufacturers to accept.

Pour remédier à ce problème, la solution la plus couramment retenue pour rattraper les jeux entre les divers éléments en céramique utilisés pour réaliser les montres consiste à procéder à un usinage manuel après l'étape de frittage. Toutefois, devant la demande croissante des clients pour des pièces d'horlogerie en céramique, les étapes d'usinage manuel sont devenues de plus en plus laborieuses au vu du nombre de pièces à traiter. En outre, les étapes d'usinage manuel sont rendues d'autant plus difficiles que la complexité de la géométrie des boîtes de montres croît sans cesse.To remedy this problem, the most commonly adopted solution to make up the gaps between the various ceramic elements used to make the watches is to carry out a manual machining after the sintering step. However, in the face of increasing customer demand for ceramic timepieces, the manual machining steps have become more and more laborious in view of the number of parts to be processed. In addition, the manual machining steps are made all the more difficult as the complexity of the geometry of the watch boxes constantly grows.

On notera que le problème des tolérances mises en jeu par les opérations de frittage est d'autant plus gênant que les dimensions des pièces d'habillage à fabriquer sont importantes. En particulier, ces tolérances de fabrication ont une incidence néfaste sur les boîtes de montres dont les dimensions sont généralement supérieures à celles des maillons de bracelet. On comprendra également que plus les fabricants de montres en céramique souhaitent réaliser des maillons de bracelet de grandes dimensions, plus ils ont de difficultés à réaliser des jonctions entre la boîte de montre et le bracelet ou entre les maillons du bracelet présentant une esthétique satisfaisante.It should be noted that the problem of tolerances brought into play by sintering operations is all the more troublesome since the dimensions of the parts to be manufactured are important. In particular, these manufacturing tolerances have a detrimental effect on the watch cases whose dimensions are generally greater than those of the bracelet links. It will also be understood that the more ceramic watch manufacturers wish to make large bracelet links, the more difficult they are to make junctions between the watch case and the bracelet or between the links of the bracelet having a satisfactory aesthetic.

La présente invention a pour but de remédier aux inconvénients mentionnés ci-dessus ainsi qu'à d'autres encore en procurant des pièces d'horlogerie présentant une esthétique améliorée.The present invention aims to overcome the disadvantages mentioned above as well as others by providing timepieces with improved aesthetics.

A cet effet, la présente invention concerne un système pour relier un bracelet à un boîtier de montre au moyen d'un maillon, le boîtier de montre comportant une carrure et un fond, le maillon comportant un premier élément creux et un second élément en partie imbriqué dans le premier élément creux, le premier élément creux portant des premiers moyens de fixation au boîtier de montre et le second élément portant des seconds moyens de fixation à un maillon adjacent du bracelet, caractérisé en ce que le boîtier de montre comporte un dispositif mécanique agencé pour faire pivoter le second élément autour d'un axe transversal à la direction longitudinale du bracelet, le second élément imprimant son mouvement de pivotement au premier élément qui pivote à son tour et qui vient se plaquer contre la carrure du boîtier de montre.For this purpose, the present invention relates to a system for connecting a bracelet to a watch case by means of a link, the watch case having a middle part and a bottom, the link comprising a first hollow member and a second member partly embedded in the first hollow member, the first hollow member having first means for attachment to the watch case and the second member having second means for attachment to an adjacent link of the bracelet, characterized in that the watch case comprises a mechanical device arranged to rotate the second element about an axis transverse to the longitudinal direction of the bracelet, the second element imparting its pivoting movement to the first element which pivots in turn and which is pressed against the middle part of the watch case.

Grâce à ces caractéristiques, la présente invention procure un système pour relier un bracelet à un boîtier de montre au moyen d'un maillon qui permet d'ajuster la position du bracelet par rapport à la boîte de montre. Il est ainsi possible de remédier aux problèmes inhérents aux tolérances de fabrication et d'obtenir une jonction ininterrompue entre le bracelet et la boîte de montre sans être obligé de reprendre manuellement les pièces d'habillage, ce qui est avantageux du point de vue esthétique et économique.Thanks to these characteristics, the present invention provides a system for connecting a bracelet to a watch case by means of a link which makes it possible to adjust the position of the bracelet with respect to the watch case. It is thus possible to overcome the problems inherent in manufacturing tolerances and to obtain an uninterrupted junction between the bracelet and the watch case without having to manually resume the trim parts, which is advantageous from the aesthetic point of view and economic.

D'autres caractéristiques et avantages de la présente invention ressortiront plus clairement de la description détaillée qui suit d'un mode de réalisation d'un maillon selon l'invention, cet exemple étant donné à titre purement illustratif et non limitatif seulement en liaison avec le dessin annexé sur lequel:

  • la figure 1 est une vue d'une montre-bracelet selon l'art antérieur ;
  • la figure 2 est une vue en coupe selon l'axe médian du bracelet du maillon terminal qui permet de relier le bracelet à la boîte de montre, et
  • la figure 3 est une vue en perspective et en éclaté du dispositif mécanique qui permet de rapprocher de la boîte de montre le maillon prévu pour relier le bracelet à la boîte de montre.
Other features and advantages of the present invention will emerge more clearly from the detailed description which follows of an embodiment of a link according to the invention, this example being given purely by way of illustration and not limiting only in connection with the attached drawing in which:
  • the figure 1 is a view of a wristwatch according to the prior art;
  • the figure 2 is a sectional view along the median axis of the bracelet of the terminal link which connects the bracelet to the watch case, and
  • the figure 3 is a perspective and exploded view of the mechanical device that brings closer to the watch case the link provided to connect the bracelet to the watch case.

La présente invention procède de l'idée générale inventive qui consiste à procurer un système pour relier un bracelet à un boîtier de montre au moyen d'un maillon, ce système comprenant des moyens qui permettent au maillon de venir se plaquer contre la boîte de montre. En ayant la possibilité de rapprocher le maillon terminal du bracelet de la boîte de montre, on peut compenser les jeux éventuels entre le bracelet et la boîte de montre inhérents à la technique de fabrication par frittage et obtenir une jonction ininterrompue entre le bracelet et la boîte de montre, ce qui est très avantageux du point de vue esthétique.The present invention proceeds from the general inventive idea of providing a system for connecting a bracelet to a housing of shows by means of a link, this system comprising means that allow the link to be pressed against the watch case. By having the possibility of bringing the terminal link of the wristband to the watch case, it is possible to compensate for any gaps between the bracelet and the watch case inherent to the sintering technique and to obtain an uninterrupted connection between the bracelet and the box. of watch, which is very advantageous from the aesthetic point of view.

On a représenté sur la figure 1 une montre-bracelet selon l'art antérieur désignée dans son ensemble par la référence numérique générale 1. Cette montre-bracelet 1 comprend un bracelet 2 en céramique relié à une boîte de montre 4 elle aussi réalisée en céramique. On constate sur la figure 1 que, de part et d'autre de la boîte de montre 4, des jeux, notés d1 et d2, sont apparents au niveau de la jonction entre la boîte de montre 4 et les premiers maillons 6 du bracelet 2.We have shown on the figure 1 a wristwatch according to the prior art designated as a whole by the general reference numeral 1. This wristwatch 1 comprises a bracelet 2 ceramic connected to a watch case 4 also made of ceramic. We see on the figure 1 that, on both sides of the watch case 4, games, noted d1 and d2, are apparent at the junction between the watch case 4 and the first links 6 of the bracelet 2.

Comme expliqué dans la partie introductive de la présente demande de brevet, ces jeux d1 et d2 proviennent des tolérances de fabrication de la boîte de montre 4 et des maillons 6 du bracelet 2. En effet, les tolérances de fabrication induisent des variations dimensionnelles des différents éléments d'habillage, ce qui provoque l'apparition de discontinuités au niveau de la jonction entre le bracelet 2 et la boîte de montre 4. Ces discontinuités sont inesthétiques, ne serait-ce que parce qu'elles laissent apparaître les moyens de fixation 8 du bracelet 2 sur la boîte de montre 4.As explained in the introductory part of the present patent application, these sets d1 and d2 come from manufacturing tolerances of the watch case 4 and the links 6 of the bracelet 2. In fact, the manufacturing tolerances induce dimensional variations of the different elements of dressing, which causes the appearance of discontinuities at the junction between the bracelet 2 and the watch case 4. These discontinuities are unsightly, if only because they reveal the fastening means 8 bracelet 2 on the watch case 4.

La présente invention permet de résoudre ce problème en procurant un maillon présentant une structure particulière pour établir la connexion mécanique sans jeu entre le bracelet et la boîte de montre.The present invention solves this problem by providing a link having a particular structure to establish the mechanical connection without play between the bracelet and the watch case.

La figure 2 est une vue en coupe selon l'axe médian du bracelet du maillon terminal qui permet de relier le bracelet à la boîte de montre et la figure 3 est une vue en perspective et en éclaté du dispositif mécanique qui permet de rapprocher de la boîte de montre le maillon prévu pour relier le bracelet à la boîte de montre.The figure 2 is a sectional view along the median axis of the bracelet of the terminal link that connects the bracelet to the watch case and the figure 3 is a perspective and exploded view of the mechanical device that brings closer to the watch case the link provided to connect the bracelet to the watch case.

Désigné dans son ensemble par la référence numérique générale 10, le maillon selon l'invention comprend un premier élément creux 12 et un second élément 14 en partie imbriqué dans le premier élément creux 12. Ce maillon 10 est prévu pour relier un bracelet dont le premier maillon 16 est représenté au dessin à un élément d'habillage qui définit au moins partiellement une boîte de montre 18. La boîte de montre 18 comprend une carrure 20 prolongée dans la direction longitudinale du bracelet par des cornes 22 percées d'un trou 24. La boîte de montre 18 est classiquement délimitée vers le bas par un fond 26.Designated as a whole by the general reference numeral 10, the link according to the invention comprises a first hollow element 12 and a second element 14 partially embedded in the first hollow element 12. This link 10 is intended to connect a bracelet, the first of which link 16 is shown in the drawing to a cladding element which at least partially defines a watch case 18. The watch case 18 comprises a caseband 20 extended in the longitudinal direction of the wristband by horns 22 pierced with a hole 24. The watch case 18 is classically bounded downwards by a bottom 26.

Conformément à l'invention, le premier élément creux 12 porte des premiers moyens de fixation à la boîte de montre et le second élément 14 porte des seconds moyens de fixation 28 au maillon adjacent 16 du bracelet. Plus précisément, le second élément 14 se présente sous la forme d'une première et d'une seconde plaquettes, respectivement 30 et 32, de formes généralement rectangulaires et disposées dans le prolongement l'une de l'autre, les dimensions de la première plaquette 30 située du côté de la boîte de montre 18 étant légèrement inférieures aux dimensions de la seconde plaquette 32 située du côté du bracelet. Les première et seconde plaquettes 30 et 32 sont reliées entre elles par un bord commun sous la forme d'une portion cylindrique creuse 34 permettant le passage d'un axe de fixation 36 dont le rôle sera décrit ci-dessous. La seconde plaquette 32 comporte en outre le long de son bord libre opposé au bord commun par lequel elle est reliée à la première plaquette 30 des seconds moyens de fixation au maillon adjacent 16 de type courant tels que des gonds 38 utilisés en combinaison avec une barrette (non représentée) de type courant également. Quant à la première plaquette 30, elle comporte sensiblement au milieu de son bord libre opposé à la portion cylindrique creuse 34 une échancrure 40 permettant le passage d'un dispositif mécanique tel qu'une tige filetée d'une vis de réglage 42. Cette vis de réglage 42 est vissée dans un trou taraudé 44 qui traverse de part en part le fond 26 de la boîte de montre 18.According to the invention, the first hollow element 12 carries first fastening means to the watch case and the second element 14 carries second attachment means 28 to the adjacent link 16 of the bracelet. More specifically, the second element 14 is in the form of a first and a second plate, respectively 30 and 32, of generally rectangular shapes and arranged in the extension of one another, the dimensions of the first wafer 30 located on the side of the watch case 18 being slightly smaller than the dimensions of the second wafer 32 located on the side of the bracelet. The first and second plates 30 and 32 are interconnected by a common edge in the form of a hollow cylindrical portion 34 allowing the passage of an attachment pin 36 whose role will be described below. The second wafer 32 further comprises along its free edge opposite the common edge by which it is connected to the first wafer 30 second means of attachment to the adjacent link 16 of the current type such as hinges 38 used in combination with a bar (not shown) of current type also. As for the first plate 30, it comprises substantially in the middle of its free edge opposite the hollow cylindrical portion 34 a notch 40 for the passage of a mechanical device such as a threaded rod of a set screw 42. This screw 42 is screwed into a threaded hole 44 which passes right through the bottom 26 of the watch case 18.

Le premier élément creux 12 forme une enveloppe de section droite sensiblement trapézoïdale délimitée par une face frontale 46, une face postérieure 48 et deux faces latérales 50. Afin de pouvoir glisser le second élément 14 à l'intérieur de cette enveloppe, un logement 52 est ménagé dans le premier élément creux 12. Ce logement 52 traverse le premier élément creux 12 de part en part et débouche à l'avant du côté de la face frontale 46 et à l'arrière du côté de la face postérieure 48 du premier élément creux 12. Le logement 52 est dimensionné de sorte que la première et la seconde plaquettes 30, 32 fassent saillie du premier élément creux 12. Enfin, les premiers moyens de fixation du premier élément creux 12 au boîtier de montre 18 comprennent un perçage 54 qui débouche dans le logement 52 et qui est pratiqué dans les faces latérales 50 du premier élément creux 12, transversalement à la direction longitudinale du bracelet. Ce perçage 54 est prévu pour recevoir l'axe de fixation 36.The first hollow element 12 forms a substantially trapezoidal cross-section envelope delimited by a front face 46, a rear face 48 and two lateral faces 50. In order to be able to slide the second element 14 inside this envelope, a housing 52 is arranged in the first hollow element 12. This housing 52 passes through the first hollow element 12 from one side to the other and opens at the front of the side of the end face 46 and at the rear of the side of the rear face 48 of the first hollow element. 12. The housing 52 is dimensioned so that the first and second plates 30, 32 protrude from the first hollow element 12. Finally, the first fastening means of the first hollow element 12 to the watch case 18 comprise a bore 54 which opens in the housing 52 and which is formed in the lateral faces 50 of the first hollow element 12, transversely to the longitudinal direction of the bracelet. This bore 54 is provided to receive the fixing pin 36.

Comme on peut le voir notamment sur la figure 1, le profil de la face frontale 46 du premier élément creux 12 épouse le contour de la carrure 20 de la boîte de montre 18. Pour l'assemblage du maillon 10 sur la boîte de montre 18, on commence tout d'abord par visser légèrement la vis de réglage 42 dans le trou taraudé 44 percé dans le fond 26 de la boîte de montre 18. Puis on insère le second élément 14 dans le premier élément creux 12 de sorte que la première et la seconde plaquettes 30, 32 fassent saillie du premier élément creux 12. Après quoi, on glisse le premier élément creux 12 entre les cornes 22 de la boîte de montre 18 en prenant soin que la vis 42 s'engage dans l'échancrure 40 du second élément 14. Lorsque cette étape du montage est achevée, les trous 24 pratiqués dans les cornes 22, le perçage 54 usiné dans le premier élément creux 12 et la portion cylindrique creuse 34 sont tous alignés. Pour terminer le montage, il suffit alors de faire passer l'axe de fixation 36 successivement à travers le trou 24 de l'une des cornes 22, puis à travers le perçage 54 et la portion cylindrique creuse 34 jusqu'à ce que l'axe de fixation 36 émerge dans le trou 24 de l'autre corne 22. Pour garantir le bon couplage entre le maillon 10 et la boîte de montre 18, l'axe de fixation 36 présente, à l'une de ses extrémités, une augmentation de diamètre 56 et à son autre extrémité un trou taraudé pour le vissage d'une vis 58 qui permet de bloquer l'axe de fixation 36.As can be seen in particular on the figure 1 , the profile of the front face 46 of the first hollow element 12 matches the outline of the middle part of the watch case 18. For the assembly of the link 10 on the watch case 18, it is first of all screwed slightly the adjusting screw 42 in the threaded hole 44 drilled in the bottom 26 of the watch case 18. Then the second element 14 is inserted into the first hollow element 12 so that the first and the second plates 30, 32 project from the first hollow member 12. After that, the first hollow element 12 is slipped between the horns 22 of the watch case 18, taking care that the screw 42 engages in the notch 40 of the second element 14. When this step of the assembly is completed, the holes 24 made in the horns 22, the bore 54 machined in the first hollow member 12 and the hollow cylindrical portion 34 are all aligned. To complete the assembly, it suffices then to pass the fixing pin 36 successively through the hole 24 of one of the horns 22, then through the bore 54 and the hollow cylindrical portion 34 until the fixing pin 36 emerges in the hole 24 of the other horn 22. To ensure the good coupling between the link 10 and the watch case 18, the attachment pin 36 has, at one of its ends, an increase in diameter 56 and at its other end a tapped hole for screwing a screw 58 which allows to block the fixing pin 36.

Pour ajuster la position du maillon 10 par rapport à la boîte de montre 18 et compenser les jeux éventuels entre ces deux éléments, on procède de la façon suivante. On a accès à la vis de réglage 42 via le trou taraudé 44 qui débouche dans le fond 26 de la boîte de montre 18. On visse la vis de réglage 42 de façon que celle-ci se translate du haut vers le bas selon la flèche A dans le trou taraudé 44. Par sa tête 60, la vis de réglage 42 vient appuyer sur la première plaquette 30 du second élément 14 de façon à faire pivoter ce second élément 14 dans le sens contraire des aiguilles d'une montre selon la flèche B. Le second élément 14, imbriqué dans le premier élément creux 12, exerce sur ce premier élément creux 12 un bras de levier sous l'effet duquel le premier élément creux 12 se rapproche de la boîte de montre 18. On arrête de visser la vis de réglage 42 lorsque la face frontale 46 du premier élément creux 12 épouse le contour de la carrure 20 de la boîte de montre 18. On comprendra qu'en vissant plus ou moins la vis de réglage 42, cela permet de régler de manière très précise la position du premier élément creux 12 par rapport à la carrure 20 de la boîte de montre 18. De plus, le réglage est imperdable.To adjust the position of the link 10 with respect to the watch case 18 and to compensate for any gaps between these two elements, the procedure is as follows. The adjustment screw 42 is accessed via the threaded hole 44 which opens into the bottom 26 of the watch case 18. The adjusting screw 42 is screwed so that it is translated from top to bottom according to the arrow A in the tapped hole 44. By its head 60, the adjusting screw 42 is pressed on the first plate 30 of the second element 14 so as to pivot the second element 14 in the opposite direction of the clockwise according to the arrow B. The second element 14, embedded in the first hollow element 12, exerts on this first hollow element 12 a lever arm under the effect of which the first hollow element 12 approaches the watch case 18. The screw adjustment 42 when the front face 46 of the first hollow element 12 matches the contour of the middle part of the watch case 18. It will be understood that by more or less screwing the adjustment screw 42, this makes it possible to very precisely adjust the position of the first hollow element 12 relative to the middle part 20 of the watch case 18. In addition, the adjustment is captive.

Il va de soi que la présente invention n'est pas limitée au mode de réalisation qui vient d'être décrit et que diverses modifications et variantes simples peuvent être envisagées par l'homme du métier sans sortir du cadre de l'invention tel que défini par les revendications annexées à la présente demande de brevet. En particulier, on comprendra que bien qu'ayant été décrite en liaison avec un maillon de bracelet et un boîtier de montre réalisés au moins partiellement en un matériau céramique, la présente invention peut s'appliquer de manière identique à des maillons et à des boîtiers réalisés en un autre matériau dur tel que l'acier.It goes without saying that the present invention is not limited to the embodiment which has just been described and that various modifications and simple variants can be envisaged by those skilled in the art without departing from the scope of the invention as defined by the claims appended to this patent application. In particular, it will be understood that although it has been described in connection with a bracelet link and a watch case made at least partially of a ceramic material, the present invention can be applied identically to links and housings made of another hard material such as steel.

Claims (9)

Système pour relier un bracelet à un boîtier de montre (18) au moyen d'un maillon (10), le boîtier de montre (18) comportant une carrure (20) et un fond (26), le maillon (10) comportant un premier élément creux (12) et un second élément (14) en partie imbriqué dans le premier élément creux (12), le premier élément creux (12) portant des premiers moyens de fixation au boîtier de montre (18) et le second élément (14) portant des seconds moyens de fixation (28) à un maillon adjacent (16) du bracelet, caractérisé en ce que le boîtier de montre (18) comporte un dispositif mécanique agencé pour faire pivoter le second élément (14) autour d'un axe transversal à la direction longitudinale du bracelet, le second élément (14) imprimant son mouvement de pivotement au premier élément (12) qui pivote à son tour et qui vient se plaquer contre la carrure (20) du boîtier de montre (18).System for connecting a bracelet to a watch case (18) by means of a link (10), the watch case (18) having a middle (20) and a bottom (26), the link (10) having a first hollow element (12) and a second element (14) partly embedded in the first hollow element (12), the first hollow element (12) carrying first fastening means to the watch case (18) and the second element ( 14) carrying second fastening means (28) to an adjacent link (16) of the bracelet, characterized in that the watch case (18) comprises a mechanical device arranged to rotate the second member (14) about a axis transverse to the longitudinal direction of the bracelet, the second member (14) imparting its pivoting movement to the first member (12) which rotates in turn and which is pressed against the middle part (20) of the watch case (18). Système selon la revendication 1, caractérisé en ce que le dispositif mécanique comprend une vis de réglage (42) agencée pour être plus ou moins vissée dans un trou taraudé (44) qui traverse de part en part le fond (26) du boîtier de montre (18) cette vis de réglage (42) comportant une tête (60) par laquelle elle vient appuyer sur le second élément (14) de façon à faire pivoter ce second élément (14).System according to claim 1, characterized in that the mechanical device comprises a set screw (42) arranged to be more or less screwed into a threaded hole (44) which passes right through the bottom (26) of the watch case. (18) said adjusting screw (42) having a head (60) by which it presses the second member (14) to pivot said second member (14). Système selon la revendication 2, caractérisé en ce que le second élément (14) comprend une première et une seconde plaquettes (30, 32) disposées dans le prolongement l'une de l'autre et reliées entre elles par un bord commun, la première plaquette (30) comportant le long de son bord libre opposé au bord commun une échancrure (40) dans laquelle est engagée la tige filetée de la vis de réglage (42), et la seconde plaquette (32) comportant le long de son bord libre opposé au bord commun des moyens pour la fixation de la seconde plaquette (32) au maillon adjacent (16) du bracelet.System according to claim 2, characterized in that the second element (14) comprises first and second plates (30, 32) arranged in the extension of one another and connected together by a common edge, the first plate (30) having along its free edge opposite the common edge a recess (40) in which is engaged the threaded rod of the adjusting screw (42), and the second plate (32) having along its free edge opposite the common edge means for fixing the second plate (32) to the adjacent link (16) of the bracelet. Système selon la revendication 3, caractérisé en ce que les moyens pour la fixation de la seconde plaquette (32) au maillon adjacent (16) du bracelet comprennent des gonds (38) utilisés en combinaison avec une barrette.System according to claim 3, characterized in that the means for fixing the second plate (32) to the adjacent link (16) of the bracelet comprise hinges (38) used in combination with a bar. Système selon l'une quelconque des revendications 3 ou 4, caractérisé en ce que les première et seconde plaquettes (30, 32) sont reliées entre elles par une portion cylindrique creuse (34) qui forme le bord commun et qui permet le passage d'un axe de fixation.System according to any one of claims 3 or 4, characterized in that the first and second plates (30, 32) are interconnected by a hollow cylindrical portion (34) which forms the common edge and which allows the passage of a fixing pin. Système selon l'une quelconque des revendications 3 à 5, caractérisé en ce que le premier élément creux (12) forme une enveloppe délimitée par une face frontale (46), une face postérieure (48) et deux faces latérales (50), en ce qu'un logement (52) à l'intérieur duquel est glissé le second élément (14) est ménagé dans le premier élément creux (12), ce logement (52) traversant le premier élément creux (12) de part en part et débouchant à l'avant du côté de la face frontale (46) et à l'arrière du côté de la face postérieure (48) du premier élément creux (12), et en ce que le logement (52) est dimensionné de sorte que la première et la seconde plaquettes (30, 32) fassent saillie du premier élément creux (12).System according to any one of claims 3 to 5, characterized in that the first hollow element (12) forms an envelope delimited by a front face (46), a rear face (48) and two lateral faces (50), in that a housing (52) inside which there is slid the second member (14) is formed in the first hollow member (12), said housing (52) through the first hollow member (12) from one side and opening at the front side of the front face (46) and at the rear of the rear face side (48) of the first hollow member (12), and in that the housing (52) is dimensioned so that the first and second plates (30, 32) protrude from the first hollow element (12). Système selon la revendication 6, caractérisé en ce que les premiers moyens de fixation du premier élément creux (12) au boîtier de montre (18) comprennent un perçage (54) pratiqué transversalement à la direction longitudinale du bracelet dans les faces latérales (50) du premier élément creux (12) et qui débouche dans le logement (52), ce perçage (54) étant prévu pour recevoir l'axe de fixation (36).System according to claim 6, characterized in that the first fixing means of the first hollow element (12) to the watch case (18) comprise a bore (54) made transversely to the longitudinal direction of the bracelet in the side faces (50). the first hollow element (12) and which opens into the housing (52), this bore (54) being provided to receive the fixing pin (36). Système selon la revendication 7, caractérisé en ce que la carrure (20) est prolongée dans la direction longitudinale du bracelet par des cornes (22) percées d'un trou (24) entre lesquelles est glissé le maillon (10) de façon que les trous (24) pratiqués dans les cornes (22), le perçage (54) usiné dans le premier élément creux (12) et la portion cylindrique creuse (34) soient alignés, l'axe de fixation (36) étant successivement passé à travers le trou (24) de l'une des cornes (22), puis à travers le perçage (54) et la portion cylindrique creuse (34) jusqu'à ce que l'axe de fixation (36) émerge dans le trou (24) de l'autre corne (22).System according to Claim 7, characterized in that the middle part (20) is extended in the longitudinal direction of the bracelet by horns (22) pierced with a hole (24) between which the link (10) is slid so that the holes (24) formed in the horns (22), the bore (54) machined in the first hollow member (12) and the hollow cylindrical portion (34) are aligned, the fastening pin (36) being successively passed through the hole (24) of one of the horns (22), then through the piercing (54) and the hollow cylindrical portion (34) until the attachment pin (36) emerges into the hole (24) of the other horn (22). Système selon la revendication 8, caractérisé en ce que l'axe de fixation (36) présente, à l'une de ses extrémités, une augmentation de diamètre (56) et à son autre extrémité un trou taraudé pour le vissage d'une vis (58).System according to claim 8, characterized in that the fixing pin (36) has at one of its ends an increase in diameter (56) and at its other end a threaded hole for screwing a screw (58).
EP20120188013 2012-10-10 2012-10-10 System for connecting a bracelet to a watch case Active EP2720092B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP20120188013 EP2720092B1 (en) 2012-10-10 2012-10-10 System for connecting a bracelet to a watch case
US13/942,984 US9010593B2 (en) 2012-10-10 2013-07-16 System for connecting a bracelet to a watch case
JP2013170979A JP5690382B2 (en) 2012-10-10 2013-08-21 Structure for connecting the bracelet to the watch case
CN201310466784.2A CN103720140B (en) 2012-10-10 2013-10-09 For watch chain being connected to the system on watchcase
HK14110237.6A HK1196756A1 (en) 2012-10-10 2014-10-14 System for connecting a bracelet to a watch case

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EP20120188013 EP2720092B1 (en) 2012-10-10 2012-10-10 System for connecting a bracelet to a watch case

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EP2720092B1 EP2720092B1 (en) 2014-12-10

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EP (1) EP2720092B1 (en)
JP (1) JP5690382B2 (en)
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HK (1) HK1196756A1 (en)

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USD1005871S1 (en) 2022-09-02 2023-11-28 Apple Inc. Band
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FR2713358A1 (en) * 1993-11-30 1995-06-09 Schick Herve Wristwatch fixture to attach watch to bracelet
EP1287758A1 (en) * 2001-08-29 2003-03-05 The Swatch Group Management Services AG Link for wrist watch bracelet
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CH703680B1 (en) * 2008-02-20 2012-03-15 Richemont Int Sa Device for fixing or coupling end link of e.g. leather strap on reversible rectangular case of high-end luxury watch, has insert comprising rib that penetrates in recess and co-operates with retaining unit, in coupled position of device

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US3581960A (en) * 1968-03-28 1971-06-01 Tsuneo Ojima Device for connecting a bracelet to a wrist watch
FR2713358A1 (en) * 1993-11-30 1995-06-09 Schick Herve Wristwatch fixture to attach watch to bracelet
EP1287758A1 (en) * 2001-08-29 2003-03-05 The Swatch Group Management Services AG Link for wrist watch bracelet
CH703680B1 (en) * 2008-02-20 2012-03-15 Richemont Int Sa Device for fixing or coupling end link of e.g. leather strap on reversible rectangular case of high-end luxury watch, has insert comprising rib that penetrates in recess and co-operates with retaining unit, in coupled position of device
EP2319349A1 (en) * 2009-11-05 2011-05-11 Richemont International S.A. Device for fixing a strap to a watch case

Also Published As

Publication number Publication date
US20140096345A1 (en) 2014-04-10
US9010593B2 (en) 2015-04-21
CN103720140A (en) 2014-04-16
HK1196756A1 (en) 2014-12-24
JP5690382B2 (en) 2015-03-25
JP2014076278A (en) 2014-05-01
CN103720140B (en) 2015-11-18
EP2720092B1 (en) 2014-12-10

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